Liquid-fuel burner



May 25 ,1926. 1,586,489

F. A. TROW LIQUID FUEL BURNER Filed Nov. 5, 1924 i U Y ni-- l llllllllillllllll Illlllll* 22T t 1 Lg@ 32 7 Q 6 u H mi Y 29 2G Ci 9 ,lv-TQRNEYS Patented May 25,r I1926'. 1

V FA'VIIJLE A. TROW, 0Fy ALBERT LEA, MINNESOTA.

K 41,586,489 FICE.

PATENToF manna-FUEL BURNER.

Application led November 5, 1924. Serial No. 747,953.

My invention relates to liquid fuel burni ers adapted particularly forstoves and has for its object to provide improved means forqulckly heating the wall ofthe retort sok that vaporization of the fuel andk use of the burner ma be obt'aned in a much shorter space of time than when the ordinary or conventional priming cup is used.

`A further object is to providea simple inexpensive adjunct to the burner' which will not add materially to its cost and can be incorporated without very much expense in a burnertli'at isalready constructed and in use, thus providing a Wide field of usefulness for the device. f

The invention consists'generally in various constructionsl and combinations all as hereinafter described and particularly pointed out in the claims.. Y

part of this speeificatlon,

Figure 1 is a plan view ofa liquid fuel burner embodying my invention ymounted in` a stove casing Yor frame;

Flgure 2 1s a longitudinal sectional View through an auxiliary vaporizing panland the fuel feed therefor; v 1

Figure'3 isa transverse sectional View through the auxiliary vaporizing pan and a portion of the burner.

Figure 3 is a sectional view on the line 3--3 of Figure 2;

Figure 4 is a through the valve and its connectlons for controlling the delivery of the liquid fuel to the auxiliary vaporizing pan;

Figure 5 is a detail enlarged View of the orifice of 'theI valve shown in Figure 4.

In the drawing, 2 re resents a ortion of a casing or frame, 3 a urner gri mounted therein;v 4 a liquid fuel supply tank in which the liquid fuel is contained under pressure, and 5 a burner located below the grid. 6 is a'retort pipe mounted horlzontally in the casing or frame 2 and extending.

over the yburner 5 adjacent thereto and having its inner 4end connected to a trunk 7 whichleads down under and communicates with the burner vfor supplying the vaporized fuel thereto. I

The trunk or pipe 7 has an air intake 8 and the retort pipe 6 has a valve seat 9 and a valvel() having a-threaded connection 'at 11 with theinner wall of the retort. The valve 10 has a needle 12 forming acontinuation thereof and projecting into the In the accompanying drawings forming` ofthestove casing and has a longitudinal sectional view..

.C arg air trunk 7. The stem 13` of the valve 10 has a hand grip 14 and is spaced from theV wall 15 and a pipe 16 connects the pressure tank 4 with the retort so that when the valve 10 1s opened the fuel may fiow through the retort, being vaporized in its passage and discharged into the mixing chamber of the trunk`7. This portion of the apparatus is common to burners of this type 1n general use. A

My improvement consists in providing a cup or pan 17 made preferably of a suitable casting havin@r an upright end bafiie wall 18 that is beneath and near the retort pipe 6 for directing a vaporizinv fiame against the surface of said retort to theat the same preparatory to the use of the burner. The cupl 17 preferably .has a bracket 19. A valve casing 20 is mounted in the frame or jacket ipe connection 21 with lthe bracket 19. valve seat 22Aisprovided in the valve casing 20 and a stem 25 which projects inwardly within a tube 26 in the pipe 21 terminates in a needle point 27 thatis fitted Within an orifice 28 1n a head 29. The valve 24 has an operating handle 30 and the valve casing 20 has an intake duct which communicates through av pipe 32 with the retort pipe 6 so that wheneverthere is a ressure in the tank 4 the liquid fuel will he forced through' the pipe 16 into the retortV 6 and from thence through the pipe 32 to the space in the valve casing 20 around the valve 24. When the valve 24 is opened, the liquid fuel under pressure will be forced through the tube 26 and. before opening the valve 24 the tube 26 and the needle point are heated by a match or candle flame to a point which will cause vaporization of the liquid fuel when the small stream fiows throu 'h the tube 26 u on o ening the -valve 24. he va or dised) around the needle point 2 upon ignitlon will be projected in the form of a -blue fiame against the bafiie wall 18 and the shape and position of this wall are such that the blue flame will be directed or defiected against the adjacent portion of the retort pipe 6 and will also fiow backwardly around the exposed end of the tube 26 and maintain the Walls of this tube at a fuel vaporizing tem erature and continue the va orization of the small stream of fuel, the "tu 26 acting as an auxiliary or supplementar retort continuing the vaporization ofthe nel un til the valve 24 is closed. The operation of kthe auxiliary retort is continued until the retort 6 is heated sufficiently for vaporizing purposes and at such time the valve controling the flow foflfuel through the mam retort to the burner is opened and when the burner is ignited bythe flame from the auxiliary retort the main retort will be kept at a vaporizing temperature by the burner flame and the auxiliary or supplementary retort may be rcut off by the closing of the valve 24. The needle point and supplementary retort are positioned a sufficient distance from the baffle wall to obtain the proper mixture of air and Lvaporized fuel to produce the desired blue heating flame, and the baille wall is so shaped that it will cause the blue flame from the auxiliary retort to encircle and envelope a portion of the main retort and insure the very quick heating of the same while the backward flow of this blue flame will maintain the forward portion of the tube 26 at the desired temperature for vaporizing the fuel flowing therethrough. This lvaporizing in the auxiliary retort will continue until its feed valve is closed. The bottom of the pan 17 is formed so that it will concentrate the flame upon the wall of the retort above; The needle point 27 has the particular functionpf preventing the orifice in the head 29 from becoming clog ed with foreign or refuse material whic may be carried along in theliquid fuel. f

In the use of the device, the operator will first provide suitable pressure on the liquid in the pressure tank. Then before opening the valve 24, he will heat the projecting end of the tube 26 by means of a match or candle flame. Then the valve 24 is opened and as the small stream of liquid `fuel flows toward the orifice 28, it will instantly become vaporized and upon ignition will throw a blue ame against the baflle wall 18 fromwhence the flame will be deflected upon the retort 6 above and backwardly from the tube 26 to continue the heating of the same and cause it to become a temporary auxiliary retort for vaporizing the fuel used in heating the main retort. Generally, a priming pan is provided adjacent the main retort and the iquid fuel therein is ignited and allowed to burn in a White flame and several minut-cs are required to heat the main retort sulficiently to vaporize the body of fuel therein. With my improvement, the time consumed in waiting for the main retort to become heated is practically eliminated. The small body of liquid fuel flowing through thetube 26 when the valve 24 is opened is instantly Vaporized by the heated walls of the tube and a blue intense heating flame `is immediately provided and projected against the walls o the main retort so that in a very short period of time after the match or other flame is applied to the tube 26 the blue heating flame 1s formed and the main retort 1s heated and ready for vaporizing the main body of fuel.

I-claim as my invention:

l. The combination with a burner and re-` tort, of an auxiliary retort and means for delivering thereto a small quantity of liquid fuel under pressure, said auxiliaryretort being adapted when heated by a small flame to vaporize such small quantity of liquid fuel, and means adjacent said main retort for directing the. flame from said auxiliary retort upon the walls of said mainv retort, and deflecting said flame upon said auxiliary retort to continue the vaporizing of the fuel therein.

h2. The combination with a burner and retort., of an auxiliary retort and means for delivering a small body of` liquid fuel thereto, the walls of said auxiliary retort being adapted to be initially heated by the flame of a small heating means for vaporizing the liquid fuel therein, and a pan having a baille wall opposite said auxiliary retort-,to deflect the flame of the vaporized fuel from said auxiliary retort f'upon said main retort and against the wall of said auxiliary retort to continue the vaporizing therein.

3. The combination with a liquid fuel burner, having a main retort pipe and a tank for supplying liquid fuel under pressure thereto, of an auxiliary retort connected with said tank and having a valve and nozzle and adapted to be initially heated by a small flame to vaporize a stream of liquid fuel when said valve is opened, said auxiliary retort being spaced from said main retort, and means for directing the flame when the vapor from said auxiliary retort is ignited upon the wall of said main retort and upon said auxiliary retort to continue the heatin of its walls and the vaporizing of the fue until said valve is closed.

4. The combination with a burner and main retort the latter having a nozzle, of an auxiliary retort, the main retort passing over and beyond said burner, the auxiliary retort being also located approximately beneath said main retort, said auxiliary retort opemng into a cup or pan which extends under the auxiliary retort andunder the main retort and arranged to direct the flame from the auxiliary retort up and around the main retort and also under the auxiliary retort, whereby the flame from the auxiliary retort is directed against the walls of the main retort and against the auxiliary retort to continue the vaporizing of the fuel therem.

A main and auxiliary .retort for a burner, the main retort passing over the burner and at one side, a, trunk for the vaporized fuel at the end of the main retort extending horizontally thence downwardly' and back and to an opening therein under the main retort and burner with an air intake connecting with saidl main retort, the auxiliary retort having a `cup-shaped v'essel restmg above said trunk for causing `the flame of the-auxiliary retort to pass around the main retort and in contact With,-

the auxiliary retort.k

6. A burner comprising a main retort, r`a trunk for vaporized fuel at the'end of the main retort, said trunk extending horizontally, thence backwardly underfthe main retort cooperating with the valve seat, the inner and having a burner' on its end, an auxiliary retort havlnga flame directing device stationed in proximity .to the main retort to direct the flame from the auxiliary retort against the main retort and against the auxiliary retort.

7. An auxiliary retort for a burner comprising an outer casing having a valve seat therein, an inner casmg having a needle valve.' extending therethrough, anda valve casing extending through and beyond the ,outer casing to furnish a small surface easily heated. Y

f8. The combination with a burner, a main retort, the latter having a nozzle, of an auxiliary retort, the inain retort passing over said burner, the auxiliary retort being also located in proximity to said main retort,

said auxiliary retort opening into a cup or panw-hich is arranged in proximity tothe auxiliary retort and the main retort and is arranged to direct the llame from the auxiliary retort against the main retort and also against theauxiliary retort to heat the same.

1 9, A main uand; auxiliary retort for a burner, thema-in retort passing over the ,burner and atl to one side, a trunk for the 1`0A .burner comprising a main burner and an auxiliary burner, the auxiliary burner comprising an outer casing, an inner casing,

the inner casing extending through' and beyond the outer casing and having a burner at its end, the extended portion of the auxiliary burner furnishing a small surface easily heated, and means to direct the heat of the auxiliary burner to heat said small surface.'

In Witness whereof, I have hereunto set my hand this first day of November, 1924.

.FAVILLE A. TROW. 

